oil yellow

noun

1
often capitalized O&Y
a
: any of several oil-soluble yellow dyes
b
or oil yellow II : a carcinogenic azo dye C6H5N2C6H4N(CH3)2 formerly used in coloring butter and oils; para-dimethyl-aminoazobenzene

called also butter yellow, methyl yellow

2
: a moderate greenish yellow that is greener and duller than citron yellow and deeper than linden green

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Cite this Entry

“Oil yellow.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oil%20yellow. Accessed 4 Mar. 2024.

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